top: inova x5 led flashlight. uses two 123 size batteries, has five leds. on/off is on the tailcap, you can twist it for constant-on, or press the button on the tailcap for momentary on/off.........bottom: brinkmann maxfire flashlight: uses two 123 size batteries, has an incandescent bulb. on/off is on the tailcap, click it on/off